地面边界层 meaning in Chinese

surface boundary layer
surfaceboundarylayer

Meanwhile , numerical computation of aerodynamics is widely applied with the progress of computer , large quantities of relative paper has been presented . but at present , the relative literature about turbulence characteristics of plural vehicles running in row and passing maneuvers is very limited . pointing to the above difficulty , in this paper , numerical computation of turbulent - velocity field is studied while a sedan exceeding a tractor - trailer truck
本论文在对某国产轿车单车外流场的模拟地面边界层、车轮转动和侧向风载荷研究基础上,以及两辆轿车并列行驶、同向超车的稳态研究的基础上,选取了两种笛卡尔网格方案和四面体混合网格方案,开展某国产轿车超过某大型运输车的数值模拟研究。